A pool cleaning robot is an autonomous device designed to collect particles such as dirt, sand, leaves, and algae from the pool's interior surfaces. Many of these robots operate completely independently of the pool's main filtration system, moving on their own and performing the cleaning task. This significantly improves the overall cleanliness and water quality of your pool.

There are fundamentally two different technologies sold as "automatic pool cleaners" on the market. The first of these are suction-side cleaners, which utilize the pool's own power. Although referred to as "robots," these are essentially automatic vacuum heads and are not intelligent. They require the suction power of the pool's main pump motor to operate and are connected directly to the pool's skimmer line or a dedicated vacuum line via a hose. They randomly move across the pool floor, sucking up debris with the vacuum power created by the pump. They do not have their own motors or filters; all the dirt they collect goes directly to the pool's main filter via the hose. The initial purchase costs of these models are much lower than robotic models, and they have fewer moving parts, resulting in lower breakdown risks. However, they send all the dirt to the pool's main filter, causing it to get dirty quickly and requiring more frequent backwashing. They also indirectly consume energy by running the pool pump, may miss some spots or get stuck in corners due to random movement, and lack wall-climbing or waterline cleaning features.

When you decide to purchase an electric robotic cleaner, you will find that not all models are the same, and you need to make the right choice based on your pool's type and needs. The most fundamental difference among pool robot models is their cleaning coverage. "Floor Only" models are typically entry-level robotic cleaners. They are more affordable and may be sufficient for pools not surrounded by trees or with less wall dirt. More advanced models, which clean the floor, walls, and waterline, can not only clean the pool floor but also climb and brush its walls. The most sophisticated models move sideways along the waterline, the area most prone to dirt and algae, to brush it as well. This coverage should be determined based on your pool's overall cleaning requirements.

Pool robot prices vary widely, from a simple suction-side model to a Wi-Fi-controlled robotic model. The biggest price difference stems from the technology level. Suction-side automatic cleaners, which connect to the pool's own pump, are the most affordable option. Robotic pool cleaners, with their own motor, filter, and intelligence, have a much higher initial cost. Therefore, when determining your budget, it is important to first clarify what level of technology you need in a robot.